Taye Diggs and his wife of ten years,Idina Menzel, are one of the few celebrity couples who seem to have broken the Hollywood curse of failed relationships, but that could all change with some new information about Taye’s infidelity. A source tells Star exclusively that the actor was totally getting frisky with a sexy brunette at Emerson nightclub in Hollywood back in June.

“Taye was hanging all over the woman at a private table,” the clubgoer, who passed a polygraph test, tells us. Our witness even adds that the former Private Practice star led the woman upstairs in the middle of the night to make out.

For more details on Taye’s infidelity and what it could mean for his relationship and family (he and Idina share a 3-year-old son), check out the latest issue of Star on newsstands now!